Qt GUI: Adding Rich Text Processing documentation from qtdoc

-included the snippets
-editing for technical accuracy still to be done.
-ported missing files from Qt 4

Change-Id: I0b2d27630b762c6518c08973a40b476d7852001d
Reviewed-by: Eskil Abrahamsen Blomfeldt <[email protected]>

1 files changed, 84 insertions, 0 deletions

diff --git a/src/gui/doc/snippets/textdocument-blocks/xmlwriter.cpp b/src/gui/doc/snippets/textdocument-blocks/xmlwriter.cpp
new file mode 100644
index 00000000000..2c691f81956
--- /dev/null
+++ b/src/gui/doc/snippets/textdocument-blocks/xmlwriter.cpp
@@ -0,0 +1,84 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the documentation of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
+**     of its contributors may be used to endorse or promote products derived
+**     from this software without specific prior written permission.
+**
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtGui>
+
+#include "xmlwriter.h"
+
+QDomDocument *XmlWriter::toXml()
+{
+    QDomImplementation implementation;
+    QDomDocumentType docType = implementation.createDocumentType(
+        "scribe-document", "scribe", "qt.nokia.com/scribe");
+
+    document = new QDomDocument(docType);
+
+    // ### This processing instruction is required to ensure that any kind
+    // of encoding is given when the document is written.
+    QDomProcessingInstruction process = document->createProcessingInstruction(
+        "xml", "version=\"1.0\" encoding=\"utf-8\"");
+    document->appendChild(process);
+
+    QDomElement documentElement = document->createElement("document");
+    document->appendChild(documentElement);
+
+    QTextBlock firstBlock = textDocument->begin();
+    createItems(documentElement, firstBlock);
+
+    return document;
+}
+
+void XmlWriter::createItems(QDomElement &parent, const QTextBlock &block)
+{
+    QTextBlock currentBlock = block;
+
+    while (currentBlock.isValid()) {
+        QDomElement blockElement = document->createElement("block");
+        blockElement.setAttribute("length", currentBlock.length());
+        parent.appendChild(blockElement);
+
+        if (!(currentBlock.text().isNull())) {
+            QDomText textNode = document->createTextNode(currentBlock.text());
+            blockElement.appendChild(textNode);
+        }
+
+        currentBlock = currentBlock.next();
+    }
+}